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#
# Copyright (C) 2023 Soleta Networks <info@soleta.eu>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
import json
import logging
import os
import shlex
import subprocess
from src.utils.probe import OSFamily, get_os_family, get_linux_distro_id, os_probe
from src.utils.disk import get_partition_device, get_efi_partition
from src.utils.uefi import *
from src.utils.fs import *
def _boot_bios_legacy(disk, part, mountpoint):
raise NotImplementedError
def _boot_bios_linux(disk, part, mountpoint):
logging.info(f'Booting Linux system')
if not get_linux_distro_id(mountpoint) == 'ubuntu':
raise NotImplementedError(f'{os_probe(mountpoint)} detected, only Ubuntu is supported for legacy BIOS boot')
_boot_bios_legacy(disk, part, mountpoint)
def _boot_bios_windows(disk, part, mountpoint):
logging.info(f'Booting Windows system')
_boot_bios_legacy(disk, part, mountpoint)
def _boot_uefi_windows(disk, part, mountpoint):
logging.info(f'Booting windows system')
bootlabel = f'Part-{disk:02d}-{part:02d}'
esp, esp_disk, esp_part_number = get_efi_partition(disk)
esp_mountpoint = esp.replace('dev', 'mnt')
if not mount_mkdir(esp, esp_mountpoint):
raise RuntimeError(f'Unable to mount detected EFI System Partition at {esp} into {esp_mountpoint}')
loader_paths = [f'{esp_mountpoint}/EFI/{bootlabel}/Boot/bootmgfw.efi',
f'{esp_mountpoint}/EFI/Microsoft/Boot/bootmgfw.efi']
try:
for efi_app in loader_paths:
if os.path.exists(efi_app):
loader = efi_app[len(esp_mountpoint):]
logging.info(f'Found bootloader at ESP partition: {loader}')
break
else:
raise RuntimeError(f'Unable to locate Windows EFI bootloader bootmgfw.efi')
efibootmgr_delete_bootentry(bootlabel)
efibootmgr_create_bootentry(esp_disk, esp_part_number, loader, bootlabel)
efibootmgr_bootnext(bootlabel)
finally:
umount(esp_mountpoint)
def _boot_uefi_linux(disk, part, mountpoint):
logging.info(f'Booting Linux system')
bootlabel = f'Part-{disk:02d}-{part:02d}'
esp, esp_disk, esp_part_number = get_efi_partition(disk)
esp_mountpoint = esp.replace('dev', 'mnt')
if not mount_mkdir(esp, esp_mountpoint):
raise RuntimeError(f'Unable to mount detected EFI System Partition at {esp} into {esp_mountpoint}')
loader_paths = [f'{esp_mountpoint}/EFI/{bootlabel}/Boot/shimx64.efi',
f'{esp_mountpoint}/EFI/ubuntu/shimx64.efi']
try:
for efi_app in loader_paths:
if os.path.exists(efi_app):
loader = efi_app[len(esp_mountpoint):]
logging.info(f'Found bootloader at ESP partition: {loader}')
break
else:
raise RuntimeError(f'Unable to locate Linux EFI bootloader shimx64.efi')
efibootmgr_delete_bootentry(bootlabel)
efibootmgr_create_bootentry(esp_disk, esp_part_number, loader, bootlabel)
efibootmgr_bootnext(bootlabel)
finally:
umount(esp_mountpoint)
def boot_os_at(disk, part):
logging.info(f'Booting disk={disk} partition={part}')
device = get_partition_device(disk, part)
mountpoint = device.replace('dev', 'mnt')
if not mount_mkdir(device, mountpoint):
raise RuntimeError(f'Cannot probe OS family. Unable to mount {device} at {esp_mountpoint}.')
is_uefi = is_uefi_supported(disk)
if is_uefi:
logging.info('UEFI support detected')
else:
logging.info('UEFI support not detected')
os_family = get_os_family(mountpoint)
logging.info(f'{os_family} detected at {device}.')
try:
if is_uefi and os_family == OSFamily.WINDOWS:
_boot_uefi_windows(disk, part, mountpoint)
elif is_uefi and os_family == OSFamily.LINUX:
_boot_uefi_linux(disk, part, mountpoint)
elif not is_uefi and os_family == OSFamily.WINDOWS:
_boot_bios_windows(disk, part, mountpoint)
elif not is_uefi and os_family == OSFamily.LINUX:
_boot_bios_linux(disk, part, mountpoint)
else:
raise RuntimeError('Unknown OS family')
finally:
umount(mountpoint)
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